<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <input type="text" @keyup.enter="fn1">
        <input type="text" @keyup.a="fn2">
        <input type="text" @keyup.esc="fn3">
    </div>
    <script src="./vue.js"></script>
    <script>
        new Vue({
            el: "#app",
            data() {
                return {
                    msg: "",
                }
            },
            methods: {
                fn1() {
                    console.log('回车');
                },
                fn2() {
                    console.log('a');
                },
                fn3() {
                    console.log('esc');
                }
            }
        })
    </script>
</body>

</html>